Permutation-lock



3Q MORRIS.

PERMUTATION LOCK.

' APPLICATION FILED JUNE 8, 1920, I 1,357,581 Patented Nov. 2, 1920.

I 2 sums-sugar J. MORRIS.

PERMUTATION LOCK.

APPHCATION FILED JUNE 8,1920.

Patented Nov. 2, 1920.

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JAN MORRIS, 0F DANVERS, MASSACHUSETTS.

PERMUTATION-LOGK.

Application filed June 8, 1920.

T 0 aZZ whom it may concern:

Be it known that 1, JAN Monnrs, citizen of Poland and resident ofDanvers, in the county of Essex and State of Massachusetts, haveinvented certain new and useful Improvements in Permutation-Locks, ofwhich the following is a specification.

This invention relates to permutation safety locks, and has for its mainobject the provision of a lock which may be opened only by astep-by-step operation with which the operator must be entirelyacquainted. V

The above and other objects will become apparent in the descriptionbelow, in which characters of reference refer to likemamed parts in thedrawings.

Referring briefly to the drawings, Figure 1 is a plan view of my lockwith the cover removed.

F lg. 2 is a similar view with the respective operating parts in anotherrelative position.

Fig. 3 is a sectional view taken on the line 342 of Fig.2.

Fig. 4 is a sectional view taken on the line l 1 of Fig. 1.

5 is a perspective view of a safe showing the bolts of my lock extendingfrom the door thereof.

F 6 is a sectional view taken on the line (36 of Fig. 2.

Fig. 7 is a perspective view of the door of the aforementioned safe.

Fig. 8 is a sectional view taken on the line 88 of Fig. 1.

Referring now in detail to the drawings, the numeral 1 represents theback frame support of my lock and 2 a panel attached thereto upon whicha member 3 is slidably mounted. A frame 1 having a substantially 5J-sha')ed side wall 10, is slidably attached to the rear of said slidablemember, and a curved band 5 of rigid material such as metal attached tothe frame 4. An eccentric or earn 6 is pivotally mounted in the panel 2at 7, said cam adapted to contact with said band 5. Springs 8 aremounted within the frame 4-, in contact at one end with said frame andat the other with the member 3. Additional springs 3 (Fig. 6) areattached at one end to the panel 2 and at the other to the member 8, bymeans of the eyes shown. Slots 9, 50, and 51 extend along the body ofthe member 3; the sides of the frame a are adapted to slide in the slots50 and 51, and the pin 9 rigid with Specification of Letters Patent.

Patented Nov. 2, 1920.

Serial No. 387,370.

said frame, slides in the slot 9; thus the frame a is resilientlyslidable toward or away from the member 3. Guides 11 and 12 are rigidwith the back 1 and guide the member 3 in its slidable motion. On eachside of the member 3 the same is provided with right angled shoulders13, 14. Through openings in either side of the frame 1 bolts 15 and 16are adapted to slide. Said bolts are provided with pins 17 and 18,respectively, projecting'upward therefrom.

ihe member 3 is provided with a nose or finger 19 extending therefrom,as shown. Adj acent said nose, and forward therefrom, lies a drum 20pivotally mounted in the frame 1. A plurality of wirerings (four areshown) surround said drum, and each of said rings is provided with apin-like radial extension, said extensions being of different sizes; forinstance, the ring 21 has an extension of, say, g-th inch, that 22, 1thinch; that 28,11- inch; that 24, iths inch. Said rings are loose on thedrum, and are circumferentially slidable; they are also not continuous,the ends of each being mutually separated by a distance slightly greaterthan the width of the nose 19. A slot 25 extends longitudinallythroughout the length of the drum 20 and radially through the peripheryof the drum.

A beam 26 having its inner edge arcu- 'ately formed at 26, and beingslidably su are thickened to provide shoulders 39 and 4.0, against whichthe ends of springs L1 and 4-2, respectively, lie. These springs aresupported in the frame by pins and 44, respectively, and the other endsof the same press against the walls of the casing or frame 1.

A cover 45 is attached to the frame 1 to inclose the same. A handle $6is attached to the drum 20 through the medium of a shaft 48, and ahandle 47 is attached to the shaft or pivot 7. Both of these handles areon the outside of the frame 1, and they are peripherally graduated asshown in Fig. 7

The operation of the lock is as follows:

' of steps. Should one turn the handle 47,

the cam 6 would advance the member 3, but the advance of said member islimited by its nose 19, which would strike the rings on the drum20. Asaforementioned, each ring has an opening in its periphery large enoughto ermit said nose to arms thlOll h' but inv each ring said opening islocated at a peripheral distance from the extension of that ring whichis different from the similarly defined distances on all the otherrings.The

nose, then, would strike the rings, and thus D the member 3 could notadvance far enough to allow the bolts 15 and 16 to move inward sincesaid bolts would still engage the sides of said member. However, byfirst manipulating the handle t? to' advance the member 8a hort distanceso that the nose 19 will lie in the orbit of the endof the extensionofthe ring :21, and then turning thehandle 46 until the opening in thering'21will coincide with the slot 25, the first step in the opening ofthe lock will have been accomplished. Then the handle 47 will be rotatedagain until the nose 19 is clear of theeX- tension of the ring 21, butwill lie in the orbit of the end of the extension of the ring 22' then aain the handle 46 is turned until the opening-in the ring 22 coincideswith the slot 25. Then the member 3 is with-drawn slight distance, andthe opening in the ring 23 brought into coincidence with the slot 25.And similarly theopening in the ring 24 is brought into coincidence withsaid slot. Then, the handle 16 is again turneduntil the slot liesdirectly in the path of the nosel9. Finally, then, the handle i? isturned until the member has advanced so that the nose 19 will havepassed throughthe alined openingsin the rings and into the slot; thenthe sides of the shoulders 13 and 1.4: will havecleared the inner endsofthe bolts 15 and 16, and the latter will be drawn in by the force of thesprings 41 and4l2; To close the lock, the cam 6 (handle 4-?) is turnedso that said cam forces the beam 26 to the left, thus forcing the boltsoutward. Nhen'they have been forced. all the way outward, the force ofthe springs 3 will pull the member 3 back and thus the shouldetirs 13and 14 will sition, as originally.

7 In Fig. 5 I have illustrated one manner of utilizing my lock, incombination with a safe door, the safe being shown at 55 and the doorthereof at 56.

It is thusapparent that l have provided a permutation lock which will beinoperable to one not acquainted with the specific operation thereof; @fcourse, the graduations on the handles 46 and a7, and on the face of thecase 1, are provided as a guide to the positions of the. operating partsof the look, so that, wltli proper calibration, the position of eachofthe operative parts in tlieloelr will be determined by the positions ofthe. handles 46 and bination locks.

1 claim:

1. A permutation lock comprising a easing, a member slidable therein,guides for said member, acam pivotally mounted cent the rear end ofsaidmember and adapted to move said member, resilient means between saidcamand said member, a nose on the fori vard end of saidmeniber, a drumpivotally mounted in said casingadjacent tbe forward end of said member,radial slot in said drum, a plurality of rings loosely mounted on saiddrum and having openings in their peripheries of a length equal. to theperipheral width of said slot radial extensions of different len ths on1 Q I rings, a siieable bolt on each side of said member, resilientmeans normally urging said bolts toward said member, a shdable 47, asiscommon ,with combeam adjacent said cam, lllllIS connecting the; sides ofsaid member, means urging said bolts normally toward said member, aneX-' tension on the forward end of said member,

a drum pivotally mounted adjacent said forward end, said drum normally'llIIlltlllg' the advance of said member, and means on said drum forallowing said member to advance beyond the distance limited asaforementioned. V f

Signed at Salem in the county of Essex and State of Massachusetts this3rd dayof June, A. D. 1920'. i

' J AN'MORRIS;

